Electrical Measuring Instruments (Another Application of Electromagnetism) 17–1 d’ARSONVAL METERS The instruments most commonly used to perform measurements are ammeters, voltmeters, and ohmmeters. These instruments are all similar in construction and are modifications of a basic instrument called a galvanometer. Galvanometers are often known as d’Arsonval meters or as permanent-magnet meter movements. The action of […]
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Direct current fundamentals
Electrical measuring instruments (another application of electromagnetism) : d’arsonval meters, dc ammeters, multirange ammeters, voltmeters and ohmmeters
Electrical Measuring Instruments (Another Application of Electromagnetism) 17–1 d’ARSONVAL METERS The instruments most commonly used to perform measurements are ammeters, voltmeters, and ohmmeters. These instruments are all similar in construction and are modifications of a basic instrument called a galvanometer. Galvanometers are often known as d’Arsonval meters or as permanent-magnet meter movements. The action of […]
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Applications of electromagnetism : electromagnetism for rotational motion, other applications of the motor effect, electromagnetism at work and summary of applications of electromagnetism .
16–4 ELECTROMAGNETISM FOR ROTATIONAL MOTION Electrical rotating machines encompass both motors and generators. All of these ma- chines operate on the principle of electromagnetism. Motors and generators are covered more completely in Chapters 19 and 21. At this time we merely introduce you to the concepts of generator action and motor effect. The term generator […]
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Applications of electromagnetism : electromagnetism for rotational motion, other applications of the motor effect, electromagnetism at work and summary of applications of electromagnetism .
16–4 ELECTROMAGNETISM FOR ROTATIONAL MOTION Electrical rotating machines encompass both motors and generators. All of these ma- chines operate on the principle of electromagnetism. Motors and generators are covered more completely in Chapters 19 and 21. At this time we merely introduce you to the concepts of generator action and motor effect. The term generator […]
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Applications of electromagnetism : solenoids for lateral motion, the electromagnetic relay and magnetic vibrators and bell .
Applications of Electromagnetism 16–1 SOLENOIDS FOR LATERAL MOTION One of the major applications of electrical energy is the production of mechanical energy. The motion desired may be in a straight line (lateral motion) or rotating (as in motors). Either way, the mechanical energy is produced by the attractive or repulsive forces of electromagnetism. Solenoids are […]
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Applications of electromagnetism : solenoids for lateral motion, the electromagnetic relay and magnetic vibrators and bell .
Applications of Electromagnetism 16–1 SOLENOIDS FOR LATERAL MOTION One of the major applications of electrical energy is the production of mechanical energy. The motion desired may be in a straight line (lateral motion) or rotating (as in motors). Either way, the mechanical energy is produced by the attractive or repulsive forces of electromagnetism. Solenoids are […]
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Magnetism and electromagnetism : permanent magnets, electromagnetism of a straight wire, electromagnetism of a coil, the magnetic core in the coil, magnetic quantities and summary of magnetism and electromagnetism
15–6 PERMANENT MAGNETS A rough classification divides magnets into two groups: permanent or temporary. A permanent magnet will keep its strength after the magnetizing force is removed; that is, the magnet maintains its orderly atomic arrangement. Before 1920, high-carbon tool steels (cobalt, molybdenum, and chrome-tungsten) were the only useful permanent-magnet materials. These materials were and […]
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Magnetism and electromagnetism : permanent magnets, electromagnetism of a straight wire, electromagnetism of a coil, the magnetic core in the coil, magnetic quantities and summary of magnetism and electromagnetism
15–6 PERMANENT MAGNETS A rough classification divides magnets into two groups: permanent or temporary. A permanent magnet will keep its strength after the magnetizing force is removed; that is, the magnet maintains its orderly atomic arrangement. Before 1920, high-carbon tool steels (cobalt, molybdenum, and chrome-tungsten) were the only useful permanent-magnet materials. These materials were and […]
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Magnetism and electromagnetism : electricity and magnetism, simple magnets, the magnetic field, ferromagnetic materials and the magnetizing process and magnetic materials and the atomic theory
Magnetism and Electromagnetism 15–1 ELECTRICITY AND MAGNETISM One of the most familiar and most frequently used effects of electric current is its ability to produce the force we call magnetism. This force is responsible for the operation of motors, generators, electrical measuring instruments, communication equipment, transformers, and a great variety of electrical control devices. All […]
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Magnetism and electromagnetism : electricity and magnetism, simple magnets, the magnetic field, ferromagnetic materials and the magnetizing process and magnetic materials and the atomic theory
Magnetism and Electromagnetism 15–1 ELECTRICITY AND MAGNETISM One of the most familiar and most frequently used effects of electric current is its ability to produce the force we call magnetism. This force is responsible for the operation of motors, generators, electrical measuring instruments, communication equipment, transformers, and a great variety of electrical control devices. All […]
Continue reading…